Trek Fuel+ EX 5 Gen 2 Electric Mountain Bike - Green

The Fuel+ EX 5 is a quiet and capable electric mountain bike that's up for any trail, at any time....

Best current price£3,499.00from Team Cycles

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Team CyclesTrek Unisex Black Fuel+ Ex 5 Gen 2 580Wh Electric Full Suspension Mountain Bike And Purple Flip Splatter
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£3,499.00
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Evans Cycles UKTrek Fuel+ Ex 5 Gen 2 2026 Electric Mountain Bike Large Green
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£3,959.00
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TredzTrek Matte Olive Grey/Trek Black Fuel+ Ex Gen 2 Size 5
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£4,400.00
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Product Information

Full details

The Trek Fuel+ EX 5 Gen 2 is an electric mountain bike designed for riders seeking a capable and quiet trail companion. Its primary benefit is the smooth power delivery from the TQ motor, making climbs easier and extending ride duration. A potential caveat is its specific tuning for trail riding, which may feel less aggressive on pure downhill or enduro terrain compared to specialized bikes. Key features include an Alpha NEXT Platinum aluminum frame, a RockShox Recon Silver RL fork, X-Fusion rear shock, a Shimano Deore 12-speed drivetrain, and powerful Shimano 4-piston hydraulic brakes.

All features

Model Part Number5335688
BrandTrek

Extended Product Information

FAQs

What is the range of the TQ 580Wh battery?

Battery range varies significantly based on terrain, rider weight, assist level used, and pedaling effort. However, the 580Wh battery is designed to provide ample range for extended trail rides, typically allowing for several hours of assisted riding.

How do I clean my electric mountain bike?

Use a soft cloth and mild soap with water to clean the frame and components. Avoid using high-pressure washers, especially near the motor, battery, and electronic components, as this can damage seals and internal parts.

What is the warranty on the Trek Fuel+ EX 5 Gen 2?

Trek offers a lifetime warranty on the frame and a two-year warranty on e-bike components, including the motor and battery. Please refer to Trek's official warranty documentation for full details.

Can I use this bike for commuting?

While the Fuel+ EX 5 Gen 2 is capable on pavement, its design is optimized for off-road trails. Its knobby tires and suspension may offer more rolling resistance and less efficiency on smooth surfaces compared to a dedicated commuter bike.

What is the recommended tire pressure?

Recommended tire pressure depends on rider weight, terrain, and whether you are running tubeless. A good starting point for the Bontrager Gunnison Elite XR 2.40" tyres on tubeless setups is between 20-30 PSI. Always check the tire sidewall for maximum pressure ratings.

How much travel does the suspension have?

The bike features 150 mm of travel from the RockShox Recon Silver RL fork at the front and 145 mm of travel from the X-Fusion Pro 2 rear shock.

What size rider is the 'SML' frame size for?

The 'SML' (Small) frame size is generally recommended for riders with a height between 155 cm and 165 cm (approximately 5'1" to 5'5") and an inseam of 74 cm to 78 cm (approximately 29" to 31").

Troubleshooting

Motor is not providing assist.

Ensure the battery is charged and properly seated. Check that the system is turned on via the TQ controller. Verify that no error codes are displayed on the LED screen. Consult the TQ manual for error code meanings.

Brakes feel weak or spongy.

Brake pads may be worn or contaminated. Check pad thickness. If contaminated, clean rotors and consider replacing pads. Air may be in the hydraulic lines; bleeding the brakes may be necessary. Consult a qualified mechanic if unsure.

Shifting is imprecise or noisy.

Check derailleur hanger alignment; it might be bent. Ensure the gear cable is not frayed and is properly tensioned. Consult a bicycle mechanic for a derailleur adjustment or tune-up.

Suspension feels harsh or does not move smoothly.

Check suspension pressure (air forks/shocks) against recommended settings for your weight. Ensure stanchions are clean. For persistent issues, suspension service by a professional may be required.

TQ display is unresponsive.

Ensure the display cable is securely connected to the controller and motor. Try restarting the system by turning the bike off and on. If the issue persists, contact Trek support or a certified dealer.

Pros and Cons

Pros

  • Quiet and smooth motor assist for a natural riding feel.
  • Capable suspension (150mm front, 145mm rear) for trail performance.
  • Reliable Shimano Deore 12-speed drivetrain for versatile gearing.
  • Powerful 4-piston hydraulic brakes ensure strong stopping power.
  • Durable Alpha Platinum Aluminum frame for longevity.
  • Long-lasting 580Wh battery for extended ride times.

Cons

  • May not be suited for aggressive downhill or enduro riding due to its trail-oriented design.
  • Aluminum frame, while durable, is heavier than carbon alternatives.
  • TQ motor, while quiet, may offer less peak power than some competitors.
  • Wider tire bead may be less resilient to pinch flats without proper tubeless setup.
  • Internal cable routing can make maintenance slightly more complex.

Setup, Compatibility & Care

Initial Setup:

  1. Ensure the battery is fully charged before the first ride using the provided TQ charger.
  2. Install the pedals and adjust the saddle height for optimal riding position.
  3. Check tire pressure and inflate to recommended levels for your riding conditions.
  4. Familiarize yourself with the TQ LED display and controller functions.

Compatibility:

  • Wheels: 29-inch wheels are standard.
  • Drivetrain: Compatible with standard 12-speed chains and cassettes.
  • Bottom Bracket: Standard for e-bike systems, consult specifications for exact type if replacing.
  • Dropper Post: Compatible with standard 34.9 mm seatposts.

Care & Maintenance:

  • Cleaning: Clean the frame and components with mild soap and water. Avoid high-pressure washing, especially near the motor and battery.
  • Drivetrain: Regularly clean and lubricate the chain. Have the drivetrain inspected periodically.
  • Brakes: Check brake pad wear and fluid levels. Ensure rotors are clean and free of debris.
  • Suspension: Refer to RockShox and X-Fusion manuals for specific lower leg service intervals and damper maintenance.
  • Battery & Motor: Keep the battery contacts clean. Store the bike in a dry place, away from extreme temperatures. Refer to the TQ manual for detailed e-system care.

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